Step Drag Bits also named blade bits, with a Tungsten Carbide inserts on the blades.
They are usually designed for use in soft formations such as sand, clay, or some soft rock.
Their uses include drilling water wells, mining, geothermal, environmental and exploration drilling.
Whenever possible, they should be used to drill pilot holes, for they produce cuttings are easiest to log.
Normally drag bits are 3 wings, but we can make 4 or 5 wings following your drawings or samples.
Many special designs are available upon your request.
Drag bit are manufactured from forged high quality alloy steel and premium tungsten carbide insert, plus state of art welding technology and multiple precision heat-treatment to provide highest penetration rate and longest lifespan at roughest condition
|Three-wing and Four-wing Regular step drag bits||3''~26''||2 3/8'',2 7/8'',3 1/2'',4 1/2'', 6 5/8'', 7 5/8'' API REG|
|Three-wing and Four-wing Heavy step drag bits||3''~26''||2 3/8'',2 7/8'',3 1/2'',4 1/2'', 6 5/8'', 7 5/8'' API REG|
1. How to order the products?
Send the inquiry with detail item description or with Model number.
If there is no packing demand we take it as sea-way packing.
If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding.
2. About lead time and shipping time?
The lead time depend on quantity of order. Usually shipped by sea, small order or urgent order we can send you by air after received your agreement.
According the distance from china to your port, usually from China to European about 25 days. To West of American 20 days.
3.Can I expect a quality products?
Yes. All our activities are accredited to ISO 9001:2008 , both in products and services, at the same time, mature production technology ensuring the quality satisfy international request.